Dunes Wind Erosion and Sands

What is deflection?

• wind erosion that removes surface soil

• wind erosion that removes surface rocks

• wind erosion that removes underground soil

• wind erosion that removes everything from the surface

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

What causes wind to deposit sand or other sediment?

• The sediment in wind causes erosion by abrasion. Sand dunes form when the wind deposits sand. Loess form when the wind deposits clay and silt.

• The sediment in wind causes erosion by abrasion. Sand dunes form when the wind deposits sand. Loess form when the wind deposits rocks and soil

• The rocks in wind causes erosion by abrasion. Sand dunes form when the wind deposits sand. Loess form when the wind deposits clay and silt.

• The sediment in wind causes weathering by abrasion. Sand dunes form when the wind deposits sand. Loess form when the wind deposits clay and silt.

In desert, a soil mixture of sand and small rocks is exposed to wind erosion.

How would the land surface changed over time?

• wind would pick up sediment making it fall on top of each other creating sand dunes

• wind would pick up sediment making it fall on top of each other creating sand mountins

• wind would pick up sediment making it fall on top of each other creating lime stone

• wind would pick up sediment making it fall on top of each other creating water volcano

Tags

NGSS.MS-ESS2-2

What are two kinds of wind erosion?

• Physical and chemical

• Deflation and abrasion

What are two types of features that result from wind deposition?

• Sand dunes and loess deposits

• Mountins and flat surface

Beginning with the source of sand, explain how a spit forms.

• drops form as a result of deposition by longshore drift. Spits occur where a headland or other obstacle interupts longshore drift, or where the coast turns abruptly.

• Spits form as a result of deposition by longshore drift. Spits occur where a headland or other obstacle interupts longshore drift, or where the coast turns abruptly.

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vocab: Loess

• When the wave drops fine particles of silt and clay, it forms deposits called LOESS.

• When the wind drops fine particles of silt and clay, it forms deposits called sea.

• When the wind drops fine particles of silt and clay, it forms deposits called LOESS.

• When the wind drops fine particles of silt and clay, it forms deposits called wind.